Magnetic tilt and raise/lower mechanisms for a venetian blind

E - Fixed Constructions – 06 – B

Patent

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Details

E06B 9/264 (2006.01) E06B 9/32 (2006.01)

Patent

CA 2458058

Magnetic tilt and raise/lower mechanisms for a venetian blind disposed between the glass panes of a multi-pane window are disclosed. The magnetic mechanisms act on tilt lines and a raise/lower line coupled to the venetian blind. An inner follower carriage is magnetically coupled to an external carriage moveable over one of the glass panes. Movement of the external carriage imparts movement of the follower carriage, which in turn actuates the tilt or raise/lower lines, causing the venetian blind to move. The inner follower carriage and the external carriage include at least one magnet assembly mounted on at least one wheel set to facilitate movement of the carriages over the glass panes as well as to reduce the force required to raise or lower the venetian blind. A multiplier is employed to reduce the stroke length required to raise or lower the venetian blind. Further, a clutch coupling an external slider to the external carriage is provided and to disconnect the slider from the external carriage upon the application of a force exceeding a threshold level.

La présente divulgation décrit des mécanismes d'inclinaison et de levage/d'abaissement magnétiques pour un store vénitien placé entre les vitres d'une fenêtre à vitres multiples. Les mécanismes magnétiques agissent sur des cordonnets d'inclinaison et sur un cordonnet de levage/d'abaissement accouplés à un store vénitien. Un chariot suiveur interne est accouplé magnétiquement à un chariot externe déplaçable sur une des vitres. Le déplacement du chariot externe transmet le déplacement du chariot suiveur, lequel actionne à son tour les cordonnets d'inclinaison ou de levage/d'abaissement, causant le mouvement du store vénitien. Le chariot suiveur interne et le chariot externe comprennent au moins un ensemble magnétique installé au moins sur un galet, réglé pour faciliter le déplacement des chariots sur les vitres, ainsi que pour diminuer la force requise pour lever ou abaisser le store vénitien. Un multiplicateur permet de diminuer la longueur des coups nécessaires pour lever ou abaisser le store vénitien. De plus, un embrayage accouple un coulisseau externe au chariot externe et cet embrayage permet de séparer le coulisseau du chariot externe, lors de l'application d'une force dépassant un certain seuil.

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